Trip adjuster for grain binders



Aug.. 18, 1931. D. w. sMl'rH l TRIPADJUSTER FOR GRAIN BINDERS Filed Aug. 19, 1950 f Patented ug. 18, 1931 'l UNITED STATES v,DANIEL W. SMITH, E OAK PARK, ILLINOIS, AssIGNoR To 'INTERNATIONAL HARVESTER j L i c COMPANIL'A CORPORATION 0E NEW JERSEYv PATENT OFFICE* y TRIP ADJUSTERy EoR GRAIN BINDERs Application nea August 19,1930. Seriana-176,358.

j y.This invention relates to binding mecha- ;15 strength, and sometimes after usage to the nisms for grain binders and the like, and

particularly to clutch tripping and compressor mechanisms therefor.

As is well known, these mechanisms comprise a plurality of rotatable shafts, to-wit, a knotter, a'needle, and packer shafts, so

.ti-med in their operation by operative con-V nections and a'tension device, to be hereincharge thereof. yDue sometimes to careless assembly, sometimes to the diiiiculty 1n manj ufacturing tension devices of uniform wearing of certain parts, these opereative connections between the shafts mentioned develop a looseness or lost motion with a con-v sequent undesirable rattling and chattering .30 ofthe parts. The greatest disadvantage of this looseness, however, lies inthe formation of bundles varying in size due to the irregu-V lar` operation of the tripping and compres v sor mechanism.

`9,5 The object of the invention is to improve A the binding mechanism of al grain binder or l 30 sizeare formed. This is accomplished by the provision of an improved takeupor tension A adjusting device, easily and quickly adjust- Y. able to compensate 4for* any lost motion be- Y `tween the parts and thereby insure the prop- 35 er tension on and operation of the tripping mechanism. kSuch adjustment is effected by' @novel means ypermitting lchange of tension without lengthening ofthezdevice, so that pivot Acenters always remain the same dis-` `10 tance apart.'

,Another Objectis to improve generallythe construction and operation of devices of this j character.

Y The embodiment of the invention chosen 451 for purposes ofillustration is shown in the vice;

accom `an in sheetof drawin s `whereinf" P g .a

Figure 1 is a front end .elevation of a binder mechanism equipped with the improved tension adjusting device;

Figure 2 is an elevational view of the ten.A 50

sion adjuster per se;

Figure V3 is a view similarV to Figure 2'but showing a different tension without having elongated m after describe`d,'that they control the size of i the bundles of grain formed and the dis-v the device between 'its pivot centers; f y I c ,j

Figure 4 is a side view 'i of the tension de-v Figure 5 is a cross .sectional view along the line 5 5 appearing in Figure 2,7: and,

Figure 6 is a face detail view of the `slide block. 1 j', i The binder shown isl.,of standardv construction and comprisesa binder V.frame 10 disposed adjacent the lbinder, deck '11, the

ybinding mechanism thereofv (not shown), being controlled by, Aa rotatable clutch' dog 12 operable from the packer shaft 13,

Vthedog in turn `being governedin its operation by a stop link or member 14. This stop ymember is fixed on the shaft 15 which carries adjacent its Afarther end, abracketl supporting the usual compressor trip 17, the latter extending upwardly kinto the path of the grain passing over the binder deck 11 in va well known manner. A crank 18 integral4 with one end of the needle shaft 19I is c on- 'nected byv means of a trip rod orjlink20with a rotatable cam wheel 21 keyed to they knetter shaft 22, and a cam wheel crank orlever 23 pivoted at 24 contactsat one end, `by means `of the cam roller 25with a cam surface `26y formed integrally: with the wheel 211 The outer .free end of the ,lever 23 is pivotally connected to a boltfor pin 27V carried in an elongated U-sha'ped strapl 28 having near its upper end opposed, velongated slots 29', which slidingly receive ears 30 which carry top and bottom plates 31, 32, respectively, integrally formedftherewith to servelas a slide block. Theplate 3l basa recess in with a hole 34 in the bottom plate 32. A nut 35 is then fitted between the plates, as shown, and a threaded rod 36 is then passed upwardly through a hole in the bight of the U- v strap 28, said threaded rod being slid through hole 34, through the nut 35, and nally seated with its upper end in the recess 33 in the top plate 31. A pin 37 then secures the nut 35 to the rod 36. A coil spring 38 is neXt provided to encircle therod 36 within the housing 28 with an end of the spring abutting the bight of said ll-strap housing 28. A square nut 39 is threadedly carried by the rod 36 and serves as a stop for the other end of the spring and, as the nut 39 is disposed between twoflat parallel straps 28, it can only be turned on the rod by turning the housing 28 to carry the nut 39 with it. In this fashion the tension of the spring may be altered as willbe clear. The lower end of the rod 36 carries a bent end 40 detachably and pivotally connected by a pin 41 to the free end of the trip arm 14. By so changing the spring tension, the proper size of bundles is controlled. The tension spring, by exerting a pull on the end of the lever 23, also serves` constantly to urge the cam roller 25 to duty on the cam surface 26.

When the clutch dog 12 is abutting against the stop link 14, the compressor trip 17 is in position to receive and support an accumulation of grain moving to it from the binder deck 11. Gradually the pressure of thegrain increases and, against the tension of the spring 38, moves thetrip outwardly and downwardly. Because the stop member 14 is keyed to the same shaft which carries the trip, the stop is movedl out of engagement with the dog-12. The ,packer shaft 13 now drives the cam wheel 21 through gearing 42 and 43 and, through the rod 20 and crank 18, imparts a part rotation or rocking movement to the needle shaft 19 to operate the needle carried thereby, not shown. This shaft is provided with a cam collar 44, lwhich functions once Y on every suchrotation to hold the stop member 14 in a raised position away from the. clutch dog 12.A At this time, of course, the,

cam roller 25 is traveling the low part of the cam 26 and the compressor trip 17 moves still farther downwardly and drops below the binder deck to permit discharge of the tied bundle.

.If wear has resulted and the tension of spring 38 is insuflicient, then obviously the hook 40 can quickly be uncoupled to permit of turning the rod 36 by hand to change the position of the nut 39 to place more tension on the spring. A comparison of Figures 2 and' herein, but may be modified to assume other forms without departing from its spirit, the

intention being to include all such forms of the invention within the scope of the appended claims.

Vhat is claimed is:

1. A tension device to be connected between the cam lever and compressor shaft trip of a binder, said device comprising a housing adapted to be pivotally connected to the cam lever, a block slidable in the housing, a rod turnably anchored in the slide block and having an end slidably passed through an end of the housing andadapted to be pivotally connectedto the compressor shaft trip, a spring encircling the rod within the housing, anda nut positioned on a threaded part of the rod within the housing and serving as a stop for an end of the spring.

2. A tension device to be connected between the cam lever andl compressor shaft tripof a binder, said device comprising a housing pivotally connected to the cam lever, said housing having opposite slots, a slide block having ears slidable in said slots, a rod turn-l'` within the housing, anda nut positionedonifgc;

a threaded p art of the rod within the Ahousing and serving as astop for anendlof'thespring.

3. A tension device tobe connected between the cam lever and compressor shaft trip of a binder, said device comprising a housing,

a block slidablein the housing, a rodturnably anchored in the slide block and having an end slidably passed throughan end offthe housing, a spring encircling 'therod within the housing, and a nut positioned on a thread-v ed part of therod withinV the housing: and serving 'as a stopv for an end of the spring;

4. A tension device to be connected between the cam lever and compressor shaft trip of a binder, said device comprisinga housing,-

said housing having opposite. slots, .a slide block having ears slida-bl'e'in. said slots, a rod turnably anchored in the slide block and having an end slidably passedthrough an end of the housing, a springencircling, the rod* within the-housing, and a nut positioned'on a threaded part of the rod within the housing and serving as a stop for an end of the spring.

- 5. A tension device to be connected between the cam lever and compressor shaft trip of" a binder, said device comprising a housing pivotally connected to the .cam lever, said housing having opposite slots, a slide block having ears slidable in said slots, a rod anchored in the slide block and having an end slidably-passed through an end of the housing and pivotallyconnected to the compressor shaft trip, a spring encircling the rod within the housing, and a stop for the spring positioned on the rod within the housing,

said stop being movable to vary the tension of the spring.

6. A tension device to be connected between the cam lever and compressor shaft trip of a binder, said device comprising a housing,

a block slidable in said housing, a rod turnably anchored in the slide block and having an end slidably passed through an end of the housing, a spring encircling the rod With` in the housing, and a stop for the spring positioned on the rod Within the housing, said stop being movable along the rod to vary the tension of the spring.

In testimony whereof I aiix my signature.

Y 16 DANIEL W. SMITH. 

